Mathematics High School

Find each percent decrease. Round to the nearest percent. From $80 to $64.

Answers

Answer 1

Answer: 20%

Step-by-step explanation: The first step in finding how much the quantity decreased. We do a subtraction:

and now we must know how much percentage is 16 of 80, for this we divide:

and finally we convert this decimal value to a percentage multiplying by 100%

0.2(100%) = 20%

the quantity decreased by 20%

Related Questions

F(x)=2/3x+9x
What is the value of f(12)?

Answers

Answer:

116

Step-by-step explanation:

To find f(12), plug in 12 as x in the equation:

f(x) = 2/3x + 9x

f(12) = 2/3(12) + 9(12)

f(12) = 8 + 108

= 116

So, f(12) = 116

Is √16/49 rational ?

Answers

Answer:

no it is not rational

Answer:

It is rational

Step-by-step explanation:

A rational number is any integer, fraction, terminating decimal, or repeating decimal.

Marc enjoys running. The graph shows how far Marc ran over time. Use equivalent ratios to find how far Marc ran in 7 minutes. (You need a label with your answer to get full credit. *

Answers

Answer:

420

Step-by-step explanation:

The graph bellow shows that 60 per minute is the distance that marc ran

so i would have to multiply

60 by 7 which equals 420

Hope this helps

The product of 4 and t is add to1

Answers

Answer:

17 cause 4×4 16 plus 1 is 17

Step-by-step explanation:

Branliest plz

Answer:

3=t

Step-by-step explanation:

4+t=1  Is that what your asking the equation?

4+t=1

-t  -t

________

4=1-t

-1   -1

_________

3=t

Hope this helps :D

5(2x-4) help I have no idea

Answers

Answer:

5.2x - 5.4

10x - 20

PLEASEE HELP.!! ILL GIVE BRAINLIEST.!! *EXTRA POINTS* DONT SKIP:((

Answers

Answer: 2 over 3

Step-by-step explanation:

Need help pls I don’t really remember functions if anyone could pls help that would be great pls and thank you.

Answers

The third one is not a function

because there is two different outputs (y values) for on input (x value). The X value 4, can’t have and input of 1 and 2

Alright I'm stressed out because of school in order to get 10 points tell me how your day was

Answers

Answer:

It's been pretty boring

Step-by-step explanation:

Where I live, we are still in lockdown and it sucks :/

Answer:

it was ight

Step-by-step explanation:

IT'S TIMED NEED HELP ASAP! Which property of similarity can be used to prove triangles LKJ and ZYX are similar? A) SAS B) AA C) SSS D) Not enough information given

Answers

Answer:

It was A

Step-by-step explanation:

I took the quiz

The property that is used to prove triangles LKJ and ZYX are similar is AAS. Hence, option B is correct.

What is a triangle?

The basic polygonal shape of a triangle has three sides & three interior angles. This is one of the fundamental shapes in geometry and is particularly associated. It has three connected vertices. Triangles can be divided into a variety of categories according to their sides and angles.

As per the given information in question,

There are two triangles given,

Δ JKL and Δ XYZ

As we can see,

∠ J = ∠ X

∠ K = ∠ Y and,

Side KL = YZ

So, by angle-angle side, the triangles are similar.

To know more about Triangle:

https://brainly.com/question/2773823

#SPJ2

PLEASE HELP WILL GIVE BRAINLIEST. IM AN EXPERT AND THSI IS STILL HARD. 18+20.

Answers

Answer:

38

Step-by-step explanation:

What is unit squared used for in Geometry?

Answers

Answer:

area

Step-by-step explanation:

What is the area of the base of the cone below? Round the number to the nearest tenth if necessary.

A. 14.7 in (2)

B. 17.3 in (2)

C. 18.5 in (2)

D.19.5 in(2)

Answers

Answer:

19.5

Step-by-step explanation:

Find the value of x that makes m ∥ n.

Answers

X is 60 degree :) . Brainliest pls

Answer:

x=60

Step-by-step explanation:

X+2x=180degree because it is co interior angle

3x=180

X=180/3

X=60.

Verification

X+2x=180

60+2(60)=180

60+120=180

The milligrams of aspirin in a person's body is given by the equation a=500(3/4) ^t, where t is the number of hours since the patient took the medicine. How much aspirin will be in the patient's body after two hours?

Answers

2/3 ^t will be left in the pt body

The amount of aspirin that will be present in the patient's body after two hours is 281.25 milligrams.

How to evaluate a given mathematical expression with variables if values of the variables are known?

You can simply replace those variables with the value you know of them and then operate on those values to get a final value. This is the result of that expression at those values of the considered variables.

For this case, we have:

Amount of aspirin in a person's body (in milligrams) after t hours of taking the medicine is:

[tex]a = 500\times(\dfrac{3}{4})^t[/tex] (in milligrams)

For t = 2 hours, we get:

[tex]a = 500\times(\dfrac{3}{4})^2 = 281.25 \: \rm milligrams[/tex]

Thus, the amount of aspirin that will be present in the patient's body after two hours is 281.25 milligrams.

Learn more about evaluating a function at a value  here:

https://brainly.com/question/2753269

PLZ HELP HURRRY. Select the correct answer. which statement is true about the slope of the graphed line? ​

Answers

Answer:

B

Step-by-step explanation:

Answer goes up one and to the left one

Step-by-step explanation:

Find the equation of the line shown.

Answers

Answer:

4y + x = 8

Step-by-step explanation:

firstly, we choose any 2 points on the line

point 1 = (0,2)

point 2 = (4,1)

x1 = 0, x2 = 4

y1 = 2, y2 = 1

from,

[tex] \dfrac{y2 - y1}{x2 - x1} = \dfrac{y- y1}{x- x1} [/tex]

[tex] \dfrac{1 - 2}{4 - 0} = \dfrac{y- 2}{x- 0} [/tex]

[tex] \dfrac{ - 1}{4} = \dfrac{y- 2}{x- 0} [/tex]

Cross multiplying,

-1(x) = 4(y - 2)

-x = 4y - 8

4y + x = 8

Find the slope of the line that passes through the points (-6,-4) and (2,4)
A. slope= 1
B. slope= -1
C. slope= 4
D. slope= -4

Answers

Answer:

The slope is 1. A.

Step-by-step explanation:

7 divided by what is 56? answer ASAP, please

Answers

Answer:

0.125

Step-by-step explanation:

Stay safe and please mark brainliest!  :)

Answer:

1/8

Step-by-step explanation:

7/x = 56

Multiply both sides by x.

7 = 56x

Divide both sides by 56.

7/56 = x

1/8 = x

x = 1/8

There is a line that includes the point (-1, 8) and has a slope of -9. What is its equation in
slope-intercept form?

Answers

The equation is y=-9x-1

Hope this helps!

What is 4,567 grams, in kilograms? (1 kg= 1,000 grams.)

Answers

Answer:

4.567

Step-by-step explanation:

you have to divide to get the answer.

A housepainter mixed 5 gal of blue paint with every 9 gal of yellow paint in order to make a green paint. Which ratio of gallons of blue paint to gallons of yellow paint will make the same shade of green paint?

the are the awnsers :
a:30 : 54
b:6 : 10
c:10 : 45
d:27 : 15

Answers

Answer:

a

Step-by-step explanation:

5 times 6 = 30

9 times 6 = 54

Answer:

was it correct the guy above me answers?

How do I find the x in this special triangle?

Answers

Answer:

x=5

Step-by-step explanation:

a^2+b^2=c^2

a=4

b=3

c=x

4^2+3^3=x^2

16+9=x^2

25=x^2

5=x

PLEASE HELPP WITH THIS QUESTION

Answers

Well I just learned about this so I think it’s Paulo!
Hope this helps
P.s, no explanation because I am bad at explaining these :)

how do you find the hypotenuse

Answers

Given two right triangle legs
Use the Pythagorean theorem to calculate the hypotenuse from right triangle sides. Take a square root of sum of squares:
c = √(a² + b²)

find the next numbers 5, 1, 7, 0, 9, -1, 11...

Answers

Answer:

7,13,6

Step-by-step explanation:

you must take the number minus 4 then add 6 minus 7 then add 9, minus 10 then add 12.

1101101+11011 in binary numbers please help

Answers

Answer:

The answer is 1000 1000

Step-by-step explanation:

In HEX, it would be 88.

In DEC, it would be 136.

In Oct, it would be 210.

Binary, how to add numbers together.

     1101101

+       11011

10001000

This is just like adding regular numbers together.

For example, when you add 88 to 55, this is what will happen

   1(r)

  88

+ 55

13(+1)  3

143

With binary, when 1 and 0 are added together, the result is 1. When 1 and 1 are added together, the result is 1 and 0 (1 being the "remainder", or the number that is carried over. This number is then added to the next part of the number when adding, just like in normal addition.

5) f (x) = −3x + 5
g(x) = 3x2 − 2x
Find f (x) + 5g(x)

A) 15x2 − 13x + 5
B) 5x3 + 12x − 5
C) 3x2 + 17x + 25
D) 3x2 − 17x + 25

Answers

what is the actual equation or question? so o can answer

What is the sum of:
5 (-15) =

Answers

Answer:

20 i think:))))))))))))

I'm not good at this stuff at all..giving brainliest if correct

Answers

Answer:

B

Step-by-step explanation:

bcs if question says "How many fruits are in the basket?" it does not say how many oranges there are.

Hope this helps if it did pls mark me brainliest.

The answer would be 35 I’m pretty sure

Use the zero product property to find the solutions to the equation x2 + 12 = 7x.

Answers

Are u solving for x? And is the “x2” x to the power of 2 or is it 2x
x = 3 or x = 4

Given
x² + 12 = 7x ( subtract 7x from both sides )
x² - 7x + 12 = 0 ← in standard form
(x - 3)(x - 4) = 0 ← in factored form
Equate each factor to zero ( zero product property ) and solve for x
x - 3 = 0 ⇒ x = 3
x - 4 = 0 ⇒ x = 4
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